摘要
根据碎石料的变形特点和路堤荷载下碎石桩复合地基的受力特性 ,将碎石桩复合地基概化为纵向上均质、横向上非均质的平面应变受力体 ,以能量原理为基础 ,推导了桩土单元均质化的弹性矩阵 ,编制了相应的有限元计算程序 ,并将其运用于某高速公路路堤填土荷载下碎石桩复合地基的沉降分析。研究结果表明 ,对路基延长方向的桩土单元进行均质化处理 ,而横截面方向仍按桩、土分别处理 ,可大大减少计算工作量 。
Based on the deformation characteristics of stone columns and the forced characteristics of the composite foundation under the load of embankment fill, the composite foundation with stone columns is summarized into a plane strain forced body which is homogeneous at longitudinal section and inhomogeneous at transverse section The equivalent elastic matrix is deduced based on energy principles A finite element method (FEM) program is drawn up and is applied to analyze the settlement of the composite foundation with stone columns at a highway The results show that the proposed method can reduce the amount of calculation greatly and insure the precision
出处
《公路交通科技》
CAS
CSCD
北大核心
2002年第5期11-13,共3页
Journal of Highway and Transportation Research and Development
